/************************************************************************
	Copy Handler 1.x - program for copying data in Microsoft Windows
						 systems.
	Copyright (C) 2001-2004 Ixen Gerthannes (copyhandler@o2.pl)

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*************************************************************************/
#include "stdafx.h"
#include "register.h"
#include "objbase.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

HRESULT RegisterShellExtDll(LPCTSTR lpszPath, bool bRegister)
{
	HRESULT hResult = CoInitialize(NULL);
	if(FAILED(hResult))
		return hResult;

	HRESULT (STDAPICALLTYPE *pfn)(void);
	HINSTANCE hMod = LoadLibrary(lpszPath);	// load the dll
	if(hMod == NULL)
		hResult = HRESULT_FROM_WIN32(GetLastError());
	if(SUCCEEDED(hResult) && !hMod)
		hResult = E_FAIL;
	if(SUCCEEDED(hResult))
	{
		(FARPROC&)pfn = GetProcAddress(hMod, (bRegister ? "DllRegisterServer" : "DllUnregisterServer"));
		if(pfn == NULL)
			hResult = E_FAIL;
		if(SUCCEEDED(hResult))
			hResult = (*pfn)();

		CoFreeLibrary(hMod);
	}
	CoUninitialize();

	return hResult;
}